Relaxation

Calcium is pumped into sarcoplasmic reticulum Crossbridges are detached from the thin filaments

Troponin-tropomyosin regulated inhibition of actin and myosin interaction is restored Active tension disappears and the rest length is restored

References,

Gordon, A.M., Huxley, A.F., and Julian, F.J. (1966). The variation in isometric tension with sarcomere length in vertebrate muscle fibres. J. Physiol., 184, 170-192.

Huxley, A.F. and Niedergerke, R. (1954). Structural changes in muscle during contraction. Interference microscopy of living muscle fibres. Nature, 173, 971-973.

Huxley, H.E. and Hanson, J. (1954). Changes in the cross-striations of muscle during contraction and stretch and their structural interpretation. Nature, 173, 973-976.

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